The Midwestern United States, also referred to as the Midwest or the American Midwest, is one of four census regions of the United States Census Bureau. It occupies the northern central part of the United States. It was officially named the North Central Region by the U.S. Census Bureau until 1984. It is between the Northeastern United States and the Western United States, with Canada to the north and the Southern United States to the south.
The U.S. Census Bureau's definition consists of 12 states in the north central United States: Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, and Wisconsin.
Chicago is the most populous city in the American Midwest and the third most populous in the United States. Chicago and its suburbs, together called Chicagoland, form the largest metropolitan area with 10 million people, making it the fourth largest metropolitan area in North America, after Greater Mexico City, the New York metropolitan area, and Greater Los Angeles. Other large Midwestern cities include Columbus, Indianapolis, Detroit, Milwaukee, Kansas City, Omaha, Minneapolis, Wichita, Cleveland, St. Paul, St. Louis, and Cincinnati. Large Midwestern metropolitan areas include Metro Detroit, Minneapolis–St. Paul, Greater St. Louis, Greater Cincinnati, the Kansas City metro area, the Columbus metro area, and Greater Cleveland.